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Wind-induced deformations in a segmented mirror

Padin, Stephen (2002) Wind-induced deformations in a segmented mirror. Applied Optics, 41 (13). pp. 2381-2389. ISSN 0003-6935.

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A Zernike expansion of wind-induced deformations in a segmented mirror is described. The wind model is a frozen turbulent field with a Kolmogorov spectrum for scales smaller than the outer scale and a flat spectrum for scales larger than the outer scale. The approach allows a mode-by-mode comparison of the wave-front error contributions from atmospheric phase distortions, wind-induced deformations, and the mirror control system noise. This is used to design a controller that minimizes the mirror surface errors by application of corrections based on edge sensor measurements and wave-front measurements on a guide star.

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Additional Information:© 2002 Optical Society of America Received 1 November 2001; revised manuscript received 29 January 2002. The author thanks R. Dekany, D. MacMartin, and K. Matthews for helpful comments and suggestions. This research was supported by the Caltech Discovery Fund.
Issue or Number:13
Record Number:CaltechAUTHORS:PADao02
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5667
Deposited By: Archive Administrator
Deposited On:27 Oct 2006
Last Modified:02 Oct 2019 23:25

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